Knee joint fixator
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YINUORUIKANG (BEIJING) TECH CO LTD
- Filing Date
- 2025-02-27
- Publication Date
- 2026-06-26
AI Technical Summary
Existing knee joint fixation devices suffer from problems such as contradictions between fixation and mobility, uneven pressure distribution, conflict between breathability and sealing, and insufficient adaptability. These issues lead to joint stiffness, localized pressure, skin dampness, and increased risk of infection, and fail to meet the needs of patients of different body types and at different stages of rehabilitation.
A knee joint fixator was designed, comprising a dynamic angle adjustment mechanism, a breathable and sealed fixation band, and a dynamic-static combined control module. It uses titanium alloy material and magnetic properties to achieve dynamic angle adjustment, is equipped with a hydrophobic membrane and antibacterial silicone pad, supports switching between static fixation and dynamic training modes, and adjusts pressure through sensors and airbag components, and promotes rehabilitation in combination with an electrical stimulation module.
It achieves overall support and breathability for the knee joint, avoiding the risk of skin dampness and infection. It supports switching between static fixation and dynamic training modes, adapts to the rehabilitation needs of different patient body types, and improves the comfort and safety of use.
Smart Images

Figure CN224403839U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical rehabilitation equipment technology, specifically to a knee joint fixator. Background Technology
[0002] Existing knee joint fixation devices have the following core drawbacks: First, there is a conflict between fixation and mobility: traditional devices (such as plaster casts or static braces) cannot dynamically adjust the angle, leading to joint stiffness or secondary injury. Second, there is uneven pressure distribution: poorly designed straps or fixation plates can easily cause localized pressure, affecting blood circulation. Third, there is a conflict between breathability and sealing, leading to skin dampness and an increased risk of infection with prolonged use. Finally, there is insufficient adaptability: lacking intelligent adjustment mechanisms, they cannot adapt to the needs of different patient body types or rehabilitation stages.
[0003] Therefore, in order to solve the above problems, we propose a knee joint fixator that combines static fixation and dynamic training functions. Utility Model Content
[0004] In view of the deficiencies in the existing technology, this utility model provides a knee joint fixator to meet the needs of static fixation and dynamic training.
[0005] This utility model provides a knee joint fixation device, comprising two dynamic angle adjustment mechanisms, a breathable and sealing fixation band, and a dynamic-static combination control module. The breathable and sealing fixation band is installed on at least one of the dynamic angle adjustment mechanisms. The dynamic-static combination control module is installed on one of the dynamic angle adjustment mechanisms. The dynamic angle adjustment mechanism includes a mounting base, a rotating mounting block, and a support plate. The rotating mounting block is rotatably mounted on the mounting base. The support plate has two locations, one on the mounting base and the other on the rotating mounting block. The breathable and sealing fixation band includes a hydrophobic membrane and an antibacterial silicone pad. The breathable and sealing fixation band is installed on the support plate and used to fix the device to the patient's knee joint. The dynamic-static combination control module supports switching between static fixation and dynamic training modes.
[0006] Furthermore, the dynamic angle adjustment mechanism also includes a connecting plate, one end of which is mounted on the rotating mounting block, and the other end of which is mounted on the support plate. In practical applications, this connecting plate is made of titanium alloy, which facilitates its use.
[0007] Furthermore, the breathable sealing and fixing band also includes a sensor and an airbag assembly, and the airbag assembly is electrically connected to the sensor; the airbag assembly is used to compress the patient's knee joint; wherein the sensor is installed on the inner surface of the breathable sealing and fixing band.
[0008] Furthermore, the airbag assembly includes an air sleeve and an air pump. The air sleeve is mounted on the inner surface of the breathable sealing and fixing band; the air pump is in communication with the air sleeve; and the air pump is electrically connected to the sensor. In practical applications, the purpose of this design is to ensure the inflation and deflation of the air sleeve, thereby effectively compressing the knee joint.
[0009] Furthermore, the dynamic-static combination control module includes a mounting cover, a fixed magnetic sleeve, and a sliding abutment ring. The mounting cover, fixed magnetic sleeve, and sliding abutment ring are sequentially slidably installed between the mounting base and the rotating mounting block, with the sliding abutment ring close to the rotating mounting block. The fixed magnetic sleeve is magnetically connected to the sliding abutment ring, and after the fixed magnetic sleeve is engaged, it drives the sliding abutment ring to abut against the rotating mounting block. In practical applications, the purpose of this design is to achieve the conversion between dynamic and static states. This design utilizes magnetic attraction to allow the sliding abutment ring to abut against the rotating mounting block, thereby achieving its fixation; thus, a static rehabilitation effect can be achieved. When dynamic training is required, the power to the fixed magnetic sleeve can be turned off.
[0010] Furthermore, the dynamic-static control module also includes an electrical stimulation module, which is used to stimulate the knee joint. In practical application, the purpose of this design is to facilitate repair.
[0011] As can be seen from the above technical solution, the beneficial effects of the knee joint fixator provided by this utility model are as follows:
[0012] (1) In practical application, the dynamic angle adjustment mechanism realizes the overall support of the device. At the same time, the breathable sealing fixing straps are provided with multiple straps, which can effectively fix the device at the knee joint.
[0013] (2) Moreover, the breathable sealing and fixing band used includes a hydrophobic membrane and an antibacterial silicone pad; in this way, breathability can be effectively guaranteed, and long-term use can avoid skin dampness and increased risk of infection.
[0014] (3) Furthermore, the dynamic and static combined control module can effectively support the switching between static fixed and dynamic training modes. Attached Figure Description
[0015] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the description of the specific embodiments or prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to scale.
[0016] Figure 1 A three-dimensional schematic diagram of a knee joint fixator provided for an embodiment of this utility model;
[0017] Figure 2 for Figure 1 A top view of a partial structure of the breathable sealing and fixing band;
[0018] Figure label:
[0019] Dynamic angle adjustment mechanism 1, mounting base 11, rotating mounting block 12, support plate 13, connecting plate 14, breathable sealing fixing band 2, hydrophobic membrane 21, antibacterial silicone pad 22, sensor 23, airbag assembly 24, air sleeve 241, air pump 242, dynamic and static combination control module 3, mounting cover 31, fixing magnetic sleeve 32, sliding abutment ring sleeve 33, electrical stimulation module 34. Detailed Implementation
[0020] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0021] The basic implementation examples are as follows: Figures 1 to 2 As shown:
[0022] like Figure 1-2 As shown in the figure, this embodiment provides a knee joint fixation method that can meet both static fixation and dynamic training needs.
[0023] This utility model provides a knee joint fixation device, comprising a dynamic angle adjustment mechanism 1 with two locations, a breathable and sealing fixation band 2, and a dynamic-static combination control module 3. The breathable and sealing fixation band 2 is installed on at least one location of the dynamic angle adjustment mechanism 1. The dynamic-static combination control module 3 is installed on one of the dynamic angle adjustment mechanisms 1. The dynamic angle adjustment mechanism 1 includes a mounting base 11, a rotating mounting block 12, and a support plate 13. The rotating mounting block 12 is rotatably mounted on the mounting base 11. The support plate 13 has two locations, one mounted on the mounting base and the other on the rotating mounting block 12. The breathable and sealing fixation band 2 includes a hydrophobic membrane 21 and an antibacterial silicone pad 22. The breathable and sealing fixation band 2 is mounted on the support plate 13 and used to fix the device to the patient's knee joint. The dynamic-static combination control module 3 supports switching between static fixation and dynamic training modes. In practical applications, the dynamic angle adjustment mechanism 1 provides overall support for the device. Meanwhile, the breathable sealing and fixing strap 2, which has multiple straps, effectively fixes the device at the knee joint. The breathable sealing and fixing strap 2 includes a hydrophobic membrane 21 and an antibacterial silicone pad 22. This effectively ensures breathability and avoids increased risk of skin dampness and infection due to long-term use. Furthermore, the dynamic and static combined control module 3 effectively supports the switching between static fixation and dynamic training modes.
[0024] In this embodiment, the dynamic angle adjustment mechanism 1 further includes a connecting plate 14, one end of which is mounted on the rotating mounting block 12, and the other end of which is mounted on the support plate 13. In practical applications, the connecting plate 14 is made of titanium alloy, which facilitates its use.
[0025] In this embodiment, the breathable sealing and fixing band 2 further includes a sensor 2323 and an airbag assembly 2424, and the airbag assembly 24 is electrically connected to the sensor 23; the airbag assembly 24 is used to compress the patient's knee joint; wherein the sensor 23 is installed on the inner surface of the breathable sealing and fixing band 2.
[0026] In this embodiment, the airbag assembly 24 includes an air sleeve 241 and an air pump 242. The air sleeve 241 is mounted on the inner surface of the breathable sealing and fixing band 2; the air pump 242 is connected to the air sleeve 241; and the air pump 242 is electrically connected to the sensor 23. In practical application, the purpose of this design is to ensure the inflation and deflation of the air sleeve 241, thereby effectively compressing the knee joint.
[0027] In this embodiment, the dynamic-static combination control module 3 includes a mounting cover 31, a fixed magnetic sleeve 32, and a sliding abutment ring 33. The mounting cover 31, fixed magnetic sleeve 32, and sliding abutment ring 33 are sequentially slidably installed between the mounting base 11 and the rotating mounting block 12, with the sliding abutment ring 33 close to the rotating mounting block 12. The fixed magnetic sleeve 32 is magnetically connected to the sliding abutment ring 33, and after the fixed magnetic sleeve 32 is engaged, it drives the sliding abutment ring 33 to abut against the rotating mounting block 12. In practical application, the purpose of this design is to achieve the conversion between dynamic and static states. This design utilizes magnetic attraction to allow the sliding abutment ring 33 to abut against the rotating mounting block 12, thereby achieving its fixation; thus, a static rehabilitation effect can be achieved. When dynamic training is required, the power to the fixed magnetic sleeve 32 can be turned off.
[0028] In this embodiment, the dynamic-static combined control module 3 further includes an electrical stimulation module 34, which is used to stimulate the knee joint. In practical application, the purpose of this design is to facilitate repair.
[0029] In summary, this knee joint fixation device is not only reasonably designed and easy to operate, but it can also effectively solve the problems of fixed rest and dynamic rehabilitation training. At the same time, it avoids skin problems caused by prolonged use. Therefore, this device is suitable for industry promotion.
[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A knee immobilizer, characterized by: Includes two dynamic angle adjustment mechanisms, a breathable sealing fixing strip, and a dynamic and static combined control module; The breathable sealing and fixing strip is installed on the dynamic angle adjustment mechanism at least once; the dynamic and static combined control module is installed on one of the dynamic angle adjustment mechanisms. The dynamic angle adjustment mechanism includes a mounting base, a rotating mounting block, and a support plate; wherein the rotating mounting block is rotatably mounted on the mounting base, and the support plate has two locations, one mounted on the mounting base and the other mounted on the rotating mounting block; The breathable sealing and fixing band includes a hydrophobic membrane and an antibacterial silicone pad; and the breathable sealing and fixing band is installed on the support plate and used to fix the band to the patient's knee joint. The dynamic-static combined control module supports switching between static fixed and dynamic training modes.
2. The knee immobilizer of claim 1, wherein: The dynamic angle adjustment mechanism also includes a connecting plate, one end of which is mounted on the rotating mounting block, and the other end of which is mounted on the support plate.
3. The knee joint fixator according to claim 1, characterized in that: The breathable sealing and fixing band also includes a sensor and an airbag assembly, and the airbag assembly is electrically connected to the sensor; the airbag assembly is used to compress the patient's knee joint; wherein the sensor is installed on the inner surface of the breathable sealing and fixing band.
4. A knee joint fixator according to claim 3, characterized in that, The airbag assembly includes an air sleeve and an air pump. The air sleeve is installed on the inner surface of the breathable sealing fixing band. The air pump is in communication with the air sleeve. The air pump is electrically connected to the sensor.
5. A knee joint fixator according to claim 1, characterized in that, The dynamic-static combination control module includes a mounting cover, a fixed magnetic sleeve, and a sliding abutment ring sleeve; wherein the mounting cover, the fixed magnetic sleeve, and the sliding abutment ring sleeve are sequentially slidably installed between the mounting base and the rotating mounting block, wherein the sliding abutment ring sleeve is close to the rotating mounting block; The fixed magnetic sleeve is magnetically connected to the sliding abutment ring sleeve, and after the fixed magnetic sleeve is opened, it drives the sliding abutment ring sleeve to abut against the rotating mounting block.
6. A knee joint fixator according to claim 1, characterized in that, The dynamic-static control module also includes an electrical stimulation module, which is used to stimulate the knee joint.